IP of Minecraft carty Server

Hi
I create a server on crafty app on a docker on my truenas scale but how can I access to it on my local network, I tried of course the IP of the server with the port but it doesn’t work.
I already ask for the Crafty support, but they can’t help me cause crafty on trains is not optimal.
I missing something, but I don’t know why, can someone please help me.